Targeted killings remain a legal grey areaThe suspected death of Mohammed Emwazi in a drone strike in Syria has reignited the debate over the legality of such killings. David Cameron has characterised earlier drone strike killings as acts of self-defence under article 51 of the UN charter, which guarantees “the inherent right of individual or collective self-defence if an armed attack occurs against a member of the United Nations”. But Kat Craig, legal director of Reprieve, disagrees: “The Prime Minister has given himself sweeping powers to kill anyone, anywhere in the world, in secret and without due process,” she said.